Bump docker/build-push-action from 5 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/docker-publish.yml

@@ -45,7 +45,7 @@ jobs:
           password: ${{ secrets.QUAY_PASSWORD }}
 
       - name: Build and push Docker image with Liquidsoap 1.4.4
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true
@@ -57,7 +57,7 @@ jobs:
             ${{ env.QUAY_IO }}/${{ secrets.QUAY_USERNAME }}/${{ env.IMAGE_NAME }}:1.4.4
       
       - name: Build and push Docker image with Liquidsoap 2.0.0
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true
@@ -69,7 +69,7 @@ jobs:
             ${{ env.QUAY_IO }}/${{ secrets.QUAY_USERNAME }}/${{ env.IMAGE_NAME }}:2.0.0
       
       - name: Build and push Docker image with the latest version of Liquidsoap
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true